Nine months before Mared died, she had visited the university’s support services to discuss her mental health, but her family did not find out until a year after her death.
Mrs Foulkes said: “I fully understand that students are young adults, and some do not wish their parents or guardians to be informed what they do or what their exam results are.
“But there should be some way that they can inform parents if something does go wrong."
A spokesperson for Cardiff University said that the way students get their results, and the information they receive has already been changed as a result of Mared's death.
“We are determined to improve the tone and language of all our written communications to our students," they said.
“We will make explicit reference to where students can access help and support if they are concerned about their results."
However, the spokesperson added that discussing students’ mental health with parents was a difficult issue.
“Universities need to balance the legitimate needs of parents to be informed about their children while respecting the rights, privacy and wishes of adult students who may – for a variety of legitimate and complex reasons - not want their personal information to be shared with their parents," they said.
“We have put a new system in place where we ask students to give us a trusted contact when they enrol. This is someone the university will contact if there are serious concerns about a student’s health or wellbeing.
“We know Mared Foulkes’ family feel we could have done things differently and we have apologised for where we did not get things right.
“The impact of Mared’s death and her parents’ wishes have informed and continue to inform and impact on our approach.”