Adopted hamsters Yggrid and Gudrun

[yasmin_the_hamster]

Hello everyone,
I am looking for an advice of someone, who has experience in adopting older hamsters. First, I will explain the conditions my hamsters lived in.
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On the image you can see Yggrid (golden) and Gudrun (white hamster mum together with her daughter). The cages were filthy, they were eating bird food with old bread, and they were basically just a toy for 5 year old kid without proper sense of how strong she is holding them. There were 4 hamsters, 2 got adopted by another kind owners, and 2 are with me.

Girls should be around 1 year old. I took them to a vet specialist, and I discovered following:
Yggrid´s heart is enlargened and she cannot have a wheel, because she can have a heart attack. Also, she had strong UTI.
Gudrun has a cyst on her liver. She is overally very tired and even though she is not loosing weight dramatically, I think she is not eating enough.

Girls are with me about 4 weeks now.
Yggrid is in Detolf, and Gudrun is in bin cage.

So my question is about Yggrid. She is taking antibiotics for 10 days now. Vet said 2 days ago, that they still found some leukocytes in her pee, but in a minimal amount and that I should continue with the antibiotics until her pee clears out. Her pee does not smell so strongly anymore and changes from pink to yellow.

However, she still seems stressed out. A week ago I started to let them out for play for about 20 minutes every day. She runs around all the time. She is always trying to get out of Detolf. She sleeps calmly during the day, but when she wakes up, she is restless.

Is there something I can do to make her feel more comfortable? Is it normal for adopted hamsters, to be so stressed even after 4 weeks? Or can she still be in pain? I had paid for all the hamster tests I could, for parasites also, and except from UTI and heart problems she is healthy.
I would also like to ask, if I should remove her sandbaths because of the UTI, or it they could stay. She absolutely loves them, but can they make her uncomfortable down there?

Also I would appreciate any advice on how to make Gudrun eat more.

Thank you,
Tereza