I have extracted what I personally feel to be important for you at this time of grief:
Out of all the horses, I found one three year old mare who/which did catch my eye.
She looks to be the opposite of Indie, but she's still quite pretty. SEE BELOW
I feel like putting my energy into another horse could be the best tribute to Indie,
and perhaps, knowledge of her, will guide me along the way with her successor. Indie will lead me to a horse who will bond with me.
I want to be able to love another horse again. I feel numb at times, and the smallest things remind me of Indie. Whenever I start talking about her, tears well up in my eyes. SEE BELOW
Jore, be advised that you are not alone in your anguish at the premature death of your Indie. Thanks to your writing skills your grief comes across powerfully to the readers of this thread. Many of us have passed along the same path which you are now treading. We share in your sorrow.
Sadly one of the events we humans inevitably have to get used to is the death of a pet with which we have developed a bond. If we have found such a horse which has offered its love and companionship in return for care and the provision of food, shelter and safety which only a human can offer, then we are indeed blessed. A true bond between horse and human is precious and a relationship not experienced by all riders.
Jore, you were indeed blessed by your Indie.
What comes next is up to you. Yes, keep riding and steadily improve your skills and knowledge of horses. Resist the temptation to rush quickly into a new purchase. Go ride lots of horses: mares and geldings, warm and cold blooded, young and mature. The colour of the horse is immaterial - what is important is the health and temperament of the animal. It is best to have a true history of the animal from birth to the day of purchase. A vet’s examination and written report is also essential.
But the most important characteristics of any horse which you might think to buy is the look in the eye of the animal whenever you appear and the feeling in your groin whenever you have mounted up. Can you make with this horse a partnership? That feeling is an instinctive reaction expressed by the part of your brain which controls your reactions and which keeps you up in the saddle. What also is mandatory is that the horse you choose is fit for your purposes in the future.
Incidentally, looks aren’t everything. I’ve owned some very pretty horses but my favourite ride was a common Welsh/Hannoverian bay cob gelding - the plainest looking of them all.
As for your grief, then sorry there is nothing to be done. In time it will fade. In due course you will be able to talk about Indie without bursting into tears. Actually for you, Jore, Indie will never die - hopefully she’ll stay in your mind for ever. That way she will never leave you But your new horse should come without baggage and should in its own right come in time to earn your love, your care and your trust. The horse might not ever be your Indie, but thanks to her you’ll know how best to treat your new buddy.
Choose well, choose carefully and be lucky.
PS When do we read your first books about your life with horses?