Hi there. I am new to Horse Forum. Just recently purchased a new horse. 15y old Register Paint Mare. She is underweight, guessing around 750 or 800lbs. Not sure of her previous home and situation but with some groceries she will be a beautiful mare. I will include a picture. She is very gentle and lets my kids, 8 & 4, on her with no fuss. I am a previous owner of a senior horse that coliced and we had to put him down. Several years has passed since that time, and now with our new horse, I am paranoid and scared about everything. I don't want her to colic or get sick. I wormed her yesterday. Her hooves need to be trimmed and shod also. Right now we let her free graze for a little while in the day and then in her pen with some hay. She has access to alot of lush green weeds and grasses. I am doing my best ot slowly introduce her to this diet b/c who knows what she was fed or ate before us, because of her condition. I also noticed some golf ball size (maybe a bit smaller) bumps under her skin around her jowels. Are these her lymph nodes? Should I be concerned, they don't cause her discomfort and seem to be stationary. I have heard of all the scare about Strangles and not sure what they are. As soon as money comes in I will get her a vet exam and hooves tended too. Is alfalfa hay ok for her or is it too rich, since she also has access to rich weeds? She did have watery diarrhea this morning, but since has turned into bright green formed stools, no worms. I would appreciate any advice or info on owning a skinny/rescued horse and how to best introduce her diet. She also seems like she walks a little slow sometimes, no founder stances. I still need to get her okay with cleaning her hooves, she seems like she doesn't even know what to do.