Can or should I continue laser txt for face wrinkles while healing from lumpectomy for breast cancer? One laser txt prior to diag. During radiation?

Continue. Healing from a lumpectomy should not interfere with any additional treatments iff the lesion is dcis and further surgery like axillary dissection suggested. If nothing further is offered for the breast then laser treatment of face should be permitted.
It's fine. The radiation you will be receiving for your breast cancer is in a different place from your facial laser treatment, so it shouldn't matter.