I had beacopp for stage 4 lymphoma for six months in 2023. My children were late primary school age and both have SEN. To be very honest I found it brutal, I was hospitalised with sepsis and other complications many times and pretty much bed bound for most of the 6 months. DH had to take over everything with the house and children and his work very kindly gave him 6 months off to do so. My mum also came to live with us on & off to help on chemo days. Beacopp is a very intense chemo but it is very successful, I've been in complete remission since I completed it.
it sounds like your daughter may be tolerating it better than me (I took it particularly badly), but be prepared she may continue to feel weaker as she goes on. It really does take it out of you, I couldn't walk to the end of the driveway by the end and it's only now two years later that I'm starting to get my strength back.
Tips: take all help offered. My cancer nurses were excellent and offered a review halfway through to discuss issues and refer me onwards. They referred me to a dietician (I needed shakes/juices as I couldn't eat) and a physio, who I saw at the hospital and was excellent for helping me regain strength but also just a lovely sympathetic ear to talk to.
My mum was a huge help and I could never have got through it without her. The ways she helped: cooking (for me when I could stomach it, but more importantly for DH and the children), cleaning - especially the bathroom - your DD needs to be really careful about infection, childcare, supporting DH by being there to talk to him about it, and importantly, not being offended by how incredibly down and snappy I was! The chemo drugs and steroids really affect your mood and I was absolutely miserable most of the time. Please don't take it personally if she takes it out on you, you're probably still her safe person to vent to. Ditto her husband, which is why it's great if you can support each other.
I did find it very hard emotionally not being able to care for the children. Holidays, christmasses, birthday parties were all cancelled and I missed so many school events, first day of secondary school etc. I was so frustrated not being physically able to do anything. It was awful at the time BUT now I'm 2 years out, those six months feel like the blink of an eye and children are so resilient, they barely remember it now. I think the best thing you can do for your daughter is just weather the storm, be there for her and remember there is light at the end of the tunnel. She will get through this and there will come a day when she's able to do all the things she's missing.
sorry if I've been very negative, but honestly for me I wished I'd had a more realistic expectation. Like you it all happened very suddenly and I was not at all prepared for how intense that particular chemo is. I actually switched down to AVD after my mid treatment scan showed a good response. If that's an option for her I found it easier going in terms of infections/hospotalisations, although still tough in terms of fatigue.
if you have any specific questions feel free to ask. I'd also recommend the lymphoma action Facebook group, I often posted on there and got a lot of support from others who'd been through the same thing