Just as Old Madam Lu felt uneasy about Guifen going to the Imperial Capital to find Youxi on her own, Guifen likewise felt uneasy about Old Madam Lu going to the Imperial Capital alone.
Old Madam Lu was right; she was one "filial piety" short of Old Madam Lu.
Old Madam Lu could use filial piety to suppress Zhenguo, and Youxi, being restrained by Zhenguo, might eventually bow his head.
But she was only Youxi's aunt; nobody cared about what she said.
What if Old Madam Lu succeeded, secured benefits for herself, and simply stayed in the Imperial Capital to enjoy her life, leaving behind the mess of Old Master Lu for her to deal with?
That was absolutely something Old Madam Lu was capable of.
Therefore, Guifen would never allow Old Madam Lu to go to the Imperial Capital by herself.