Installing defender on a website I will manage


I have a new client with malware issue. I will clean the malware and install security plugins, I would like to install defender as well, however she has admin logins and I am not interested in sharing all plugins to her website with my username and password, is there a way to install and activate defender without the wpmudev dashboard? Or install the dashboard but not allow access to plugins?

Also, if I do install the wpmudev dashboard, will she have access to the support and blog?