Enlarged lymph nodes on chemo.

My furry child was recently diagnosed Lymphoma, cells suggestive of T-cell. I do not know the stage because we started treatment immediately and I was also told that no matter the stage the treatment would be the same. She is receiving, I am told, the same protocol that the Oncologist Vets
use at UF, Vinblastine, Vincristine,Elspar (Asparaginase), Prednisone orally, Cyclophosphamide orally (alternated with the prednisone)and Doxorubicin. She received her 3rd trtmt last Wed (weekly chemo at the vet & oral meds at home) and has been doing great, but we never knew she was sick in the first place. She is eating, playing and the lymph nodes decreased in size. However, last night and today I have noticed her lymph nodes under her jaw and by her chest/shoulders (prescapular, I think) have enlarged. Does this mean the chemo isn't helping? Is this something that does occur during chemo that the lymphnodes increase & decrease in size? Could this mean she is more advanced or that the cancer is progressing faster seeing it is a T-cell? We love her very much and it breaks our hearts knowing this is not a cure. Thank you so much for your time and anything you can enlighten me on regarding what this could possibly mean would be greatly appreciated.

I was thinking along those same lines just couldn't wait for an answer til tomorrow. The not knowing is the worse part.

Thank you, thank you thank you for your time.