Claiming return to work credit while on DLA?

Does anyone know if you can claim Return To Work Credit while also on DLA HRM please?

My friend has been on ESA for 13 weeks and has now been offered a job which she will accept as her condition has improved. This was not the condition for which she claims the DLA.

Can she claim the RTW credit as well as continuing to receive her DLA?

I've googled but can't find relevant information.

Thanks