Firstly, the results of the needle aspiration, which suggest Lipomas (fatty tissue tumours) are nothing to worry about and sound quite unconnected to the elevated serum ALT levels.
Serum ALT can be raised by drug toxicity, though usually by drugs such as Phenobarbital and Corticosteroids.
The Uronalin for a urinary tract infection could possibly have had an effect on her liver, even though she only took them for 5 days. That drug can also cause nausea and vomiting. So even though she is off those tablets now, they might possibly have upset her. Even though they had a positive effect on the urinary tract disorder.
The drugs you mentioned....Lanzaprazole?....Ranitidine?....and Butilhioscina... for digestive tract problems MAY be affecting the ALT level, but I don't know.
I think you do need to ask your vet about this.
If every time you give your dog the pills, she vomits, then my instinct would be not to give them to her (as missing these medicines wouldn't appear to be life-threatening) , and just feed her very plain easy to digest food. Like chicken and rice, or white fish and rice, until you have spoken to the vet about her reactions to the medication. See how she goes without those medicines.
It might be a case of over-medicating her for the previous drug reaction? Perhaps (?) she didnt need such medicines to combat the side effects of the Uronalin? Perhaps when that drug was stopped (after her UTI improvement) her body was slowly re-balancing and didn't need heavy medication? Just water, rest and light food perhaps?
Again I am not a vet so I don't know for certain and I don't know your dog's particular case.
The elevated ALT level will need to be investigated further, but if it is a drug reaction, discontinuing the drug and keep regular monitoring of serum ALT and all the liver enzymes to see if they come down, as they might.
There may be other deeper causes. The vet needs to find out. If your vet is not so good, is there another vet you could take her to?